Measurement of hyperfine transition rates in muonic 19F, 23Na, 31P, and natCl

Autor: Brad L. Johnson, J. Bauer, R. Porter, David F. Measday, D.H. Wright, B.A. Moftah, T. P. Gorringe, M.A. Kovash, D. S. Armstrong, M. D. Hasinoff, P. Gumplinger
Rok vydání: 1993
Předmět:
Zdroj: Physics Letters B, Vol 309, Iss 3, Pp 241-245 (1993)
ISSN: 0370-2693
Popis: From the time dependence of the ( μ − , nν ) reaction we have determined the hyperfine transition rates for the muonic atoms of 19 F, 23 Na, and nat Cl, obtaining Λ h =4.9±1.2 μ s −1 , 8.4±1.9 μ s −1 , and 6.5±0.9 μ s −1 , respectively. Further, from the branching ratios of the ( μ −1 , ν ) reaction on muonic 31 P we have inferred a hyperfine transition rate that is much faster than the muon disappearance rate, Λ h ⪢ Λ D . These results are in reasonable agreement with the rates calculated for Auger emission, and qualitatively confirm the correction to the muonic atom's hyperfine splitting due to the distribution of magnetism in the nucleus. The 31 P result, however, disagrees with an earlier suggestion of the inhibition of Auger emission.
Databáze: OpenAIRE